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(No Model.)

B. O. COLLINS.

SNOW PLOW.

Patented Mar. 23, 1897.

I Iflvenior: E2iward 6'. Collins,

m'tnesses:

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EDWARD C. COLLINS, OF TAUNTON, MASSACHUSETTS, ASSIGNOR TO THE TAUNTON LOCOMOTIVE MANUFACTURING COMPANY, OF SAME PLACE.

SNOW-PLOW.

SPECIFICATION forming part of Letters Patent No. 579,424, dated March 23, 1897.

Application filed January 14, 1897. Serial No. 619,174. (No model.)

To all whom, it may concern.- to serve as guides for the extension-plate A Be it known that I, EDWARD C. COLLINS, without binding the same. A clamping-bolt of Taunton,in the county of Bristol and State C is also passed through the slot l3 and of Massachusetts, have invented a new and through a hole in the plate A and is screwed 5 5 useful Improvement in Snow-Flows, of which into the nut D provided with the operatingthe following, taken in connection with the handle d, by means of which the plate A may accompanying drawings, is a specification. be firmly clamped to the share A in any de- My invention relates to snow-plows; and sired adjusted position. it consists in certain novel features of con- F F are sheet-metal housing secured to the 60 1o struction, arrangement, and combination of front face of the plate A by suitable screws parts which will be readily understood by ref.- 19 b in positions to cover the slots 13 .and B erence to the description of the accompanying and inclose the heads of the studs C, C, and drawings and to the claims hereto appended, C and the clamping-bolt C as shown in Figs. and in which my invention is clearly pointed 2, 3, and 4E. 65

out. The plateA is provided at its outer end with Figure 1 of the drawings is a partial plan the loop-like handle G, by which said plate of a snow-plow embodying my invention. Fig. may be moved endwise when unclamped to ad- 2 is an elevation of a portion of the plowshare just it to the desired position on the share A. drawn to an enlarged scale and illustrating The upper edge of the share A is inclined, 7o

my invention. Fig. 3 is a vertical section on its forward end being narrower than its rear line 00 x on Fig. 2. Fig. 4 is a similar section end, as shown in Fig. 2 and in said prior paton line 3 y on Fig. 2, and Fig. 5 is a partial cut, and the extension-plate A is correspondvertical section on line .2 .e' on Fig. 2. ingly inclined and is made of such a width My invention is an improvement upon the that when extended to the limit of its outward 7 5 invention shown and described in the Letters movement its upper edge is in line with the Patent No. 536,328, granted to Dean and Math upper inclined edge of the main share A, as ews March 26, 1895, and has for its object the shown in Fig. 2. hen retracted into a po production of a plowshare adapted to be sition with its outer end coinciding with the lengthened or shortened at its forward end outer end of the main share A, the prepon- 8o 0 for the purpose of increasing or diminishing derence of weight of said plate A inside of the width of the path plowed to suit the varythe supporting-bolts C, C, C and C tends ing circumstances under which a plow maybe to cause the inner end of said plate A to sag used. or drop below the line of the lower edge of In the drawings, A is the main plowshare, themain share A. To obviate this tendency,

3 5 supported and operated in substantially the I set in plate A, nearits inner upper corner, same manner as in said patent before cited, a headed stud f, which passes through a slot the forward end of said share terminating ein the plate H, provided at its upper end with at a. a hook H,which extends over and engages the A isadetachable and adjustable extensionback side of the share A, as shown in Fig. 3.

0 plate curved transversely to the curve as the "When the plate A is extended to its greatmain share A and provided with the two lonest limit, the hook-plate II II drops so that gitudinal and parallel slots B and B, extendthe stud f is in the upper end of the slot 6, as ing nearly the whole length thereof, as shown shown in Fig. 2, but as the plate A is retracted in Fig. 2, partly in full lines and partly in to its innermost position the hook-plate II II 5 5 dotted lines. is moved upward by the inclined upper edge A pair of headed studs C and C are passed of the share A acting thereon until the lower through the slot B and set firmly in the share end of the slot 0 is in contact with the stud A, and a similar stud C is passed through f and the under side of the hook rests upon the slot B and firmly set in said share A, said the upper edge of the share A in an obvious ICO 5o studs C, C, and 0 being clamped to said share manner.

by the nuts D, D, and D in such a manner as The operation of my invention will be read ily understood from the foregoing Without further explanation here.

What I claim as new, and desire to secure by Letters Patent of the United States, is

1. In a railway snow-plow the combination of a main plowshare extending obliquely across the trackrail; an extension-plate mounted upon and adjustable endwise of said main plowshare and provided with longitudinal slots extending nearly the entire length thereof; a plurality of headed studs or bolts set in fixed positions in said main ploWshare and engaging said slot to serve only as supports and guides for said plate; and a separate bolt and hand-nut for clamping said plate in the desired adjusted position.

2. In a railway snow-plow, the combination of a main ploWshare extending obliquely across the track-rail; an extensionplate mounted upon and adjustable endwise of said main plowshare and having a slot or slots extending longitudinally nearly the entire length thereof; a plurality of studs or bolts set in said main plowshare and engaging said slot or slots with heads outside of said plate; means for clamping said plate in the desired adjusted position; and a chambered housing or guard covering each of said slots and the heads of said studs 01' bolts.

3. In a railway snow-plow the combination with a main plowshare extending obliquely across the track-rail; of an extension-plate mounted upon the front end of said main plowshare and adjustable endWise thereon; means for guiding said plate in its endwise adjustments; a clamping device for securing said plate in its adjusted position; and a movable hook-plate carried by said adjustable share-plate and arranged to engage the upper edge of said main plowshare.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing Witnesses, on this 30th day of December, A. D. 1896.

EDWARD G. COLLINS.

. IVitnesses:

GEORGE II. SWIFT, FRED H. NOYES. 

